| http://www.w3.org/ns/prov#value | - ???What you normally end up doing, because you???re trying to balance the abrasion resistance with the slip, is trying to use different types of polymers that don???t necessarily reduce the CoF as much as some other polymers,??? Mr. Bradley said. ???So it???s very difficult to take a wax-free ink and raise its CoF. That???s a very hard thing to do.???
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